Clinical results indicate similar outcomes for both treatments.
They are considered as equally effective, with slightly better 10 years survival rates for surgery.
Is good to know that surgery poses serious complications as impotence and urinary incontinence (unable to control the need for urination).
Prostate radiation can cause impotence in some patients, too.
Rectal and bladder problems can also appear.

How old is your friend?

he is in his late 6o's. They told him that he would more than likely have to wear a bag if he got the surgery and because of his kidney problems, and strokes, he is at a greater risk for surgery. His wife is very distraught and doesn't know what to do. I told her I'd ask opinions on here for her and let her know. I feel real bad. They act like grandparents towards my girls. They are very sweet. Oh, also, he shows signs of altztimers(? spelling)

Prostate cancer treatment should be highly individualized.
Usually, a team of physicians help patient with choosing the right treatment.
New modern radiation technique that gives more radiation dose directly to the prostate than to surrounding healthy tissues, will be good option for your friend.

Best wishes!
Marija

thank you. I forgot to say, he is a veteran, so his choices are limited

Cancer researchers have long suspected that both estrogen and testosterone (the “male hormone”) play roles in prostate cancer risk.